Extron MLC Plus 84 handleiding
Handleiding
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MLC Plus 84 Series • Hardware Features and Installation 25
• Digital input with pull-up enabled
• When the port is configured for pull-up, switch 2 is closed, activating the
+5.0VDC pull-up resistor.
• When an external switch closes (shorts to ground, logic low), the port is on.
• When the external switch opens (logic high), the port is off.
• Example application, digital input with pull-up: connecting a two-position
switch
+5.0 V
1k ohms
SW 2
SW 1
Two-position
Switch
Digital
I/O
GND
Voltage
Protection
CTL
Figure 26. Digital I/O Digital Input Application:
Two-position Switch With Pull-up
Two-position switch is open: logic high.
Two-position switch is closed: logic low.
F
Relay ports — Relay ports (see figure 18,
F
) provide control for power, screen or
projector lifts, window coverings,
and similar items, when trigger
events occur.
These relay contacts may be
used to control any equipment as
long as the contact specifications
of a total of 24VDC at 1ampere
are not exceeded for each port.
These relays are normally open by
default.
When activated, the open contacts
close. They can be set up to
operate in one of two ways:
• Latching (brief or indefinite
period contact) (press to
close, press to open), or
• Pulsed (timed cycle) (press to
close, timeout to open, with
automatic repeat).
Use Global Configurator to change the length of the timeout period.
NOTE: The pulse function is absolute: it always sets the relay state to closed, times
out (briefly), then opens the contact. It overrides the previously selected setting
(on state, off state, or toggle).
12
C
G
I
N
D
IN
RELAYS
Rear
Pa
nel
To Room
Control
Equipment
Closed
Normally
Open
Normally
Open
Common
Relays
• Connect devices for relay control.
• Do not exceed a total of 24V, 1A
for each port.
All relays are
normally open.
Figure 27. Cabling Relay Ports
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Productinformatie
| Merk | Extron |
| Model | MLC Plus 84 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 9928 MB |
